Yuzhou Liu

The Chinese University of Hong Kong | CUHK · Institute of Space and Earth Information Science

Tunneling work, including the construction of municipal tunnels and metro lines, may disturb the structural health of aging buildings in densely built urban areas. Deformation monitoring and risk assessments of aging buildings are crucial to mitigate incidents and prevent losses of people’s lives and properties. Time-series InSAR reveals spatio-tem...

The improved spatial resolution of Synthetic Aperture Radar (SAR) images from newly launched sensors has promoted a more frequent use of distributed scatterer (DS) interferometry (DSI) in urban monitoring, pursuing sufficient and detailed measurements. However, the commonly used statistical methods for homogeneous pixel clustering by exploring ampl...

In this paper, we develop an optimized network to achieve the full detection of single and double persistent scatterers (PSs) in SAR tomography (TomoSAR). The two-tier network used in persistent scatterer interferometry (PSInSAR) is applied to TomoSAR. Adaptive network densification is constructed to improve global connectivity in the first-tier ne...

Reclaimed lands account for a large portion of the developable territories in Hong Kong. Towards better construction planning for the follow-up civil works, stability monitoring is usually required at these artificial sites. The Synthetic Aperture Radar Interferometry (InSAR) technique can provide bi-weekly updates of high resolution (up to 1 m) an...

The Lianjiang Plain in China and ancient villages distributed within the plain are under the potential threat of surface motion change, but no effective monitoring strategy currently exists. Distributed Scatterer InSAR (DSInSAR) provides a new high-resolution method for the precise detection of surface motion change. In contrast to the first-genera...

Multi-temporal InSAR technique can implement continuous earth surface deformation detection with long time scale and wide geographical coverage. In this paper, we first employ the Small Baseline Subset method to survey potential landslides in Guide County, Qinghai Province, which is identified as a loess landslide prone area for geological and clim...